Home internet cancellation

The worst experience ever. I have been trying to cancel a subscription for 2 months. Every time I call I'm told that I'll get a call from the relevant person, no one ever calls me instead when I call I get sent pillar to post. I'm being subjected to go to an MTN Store that is 400k away to try get assistance. Oh and their complaints department doesn't care a bit because Bryan Sibeko is sitting there laughing at my emails because he no longer responds now, all they do is send an invoice for me to make a payment for a service they are no longer providing. Every person I've interacted with has been unhelpful and all the "supervisors" at the call centres are forever in endless meetings